China Safety Science Journal ›› 2022, Vol. 32 ›› Issue (S2): 123-130.doi: 10.16265/j.cnki.issn1003-3033.2022.S2.0205
• Safety engineering technology • Previous Articles Next Articles
Received:
2022-08-20
Revised:
2022-10-18
Online:
2022-12-30
Published:
2023-06-30
YAN Yinshan. Numerical study on water retention effects of separation layer grouting filling in Yujialiang coal mine[J]. China Safety Science Journal, 2022, 32(S2): 123-130.
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URL: http://www.cssjj.com.cn/EN/10.16265/j.cnki.issn1003-3033.2022.S2.0205
Tab.1
Basic physical and mechanical properties of rocks in Yujialiang Coal Mine
力学性质 | 泥岩 | 粉砂岩 | 细砂岩 | 中砂岩 | 粗砂岩 |
---|---|---|---|---|---|
容重/(N·m-3) | 2.4 | 2.4 | 2.4 | 2.3 | 2.4 |
抗压强度/MPa | 31.9 | 41.2 | 48.4 | 41.3 | 16.1 |
抗拉强度/MPa | 1 | 1.5 | 1.9 | 2.2 | 1.4 |
抗剪强度/MPa | 4.3 | 5.3 | 6.9 | 5.9 | 6.4 |
弹性模量/MPa | 0.65 | 1.09 | 1.55 | 1.59 | 0.79 |
泊松比 | 0.14 | 0.23 | 0.24 | 0.44 | 0.17 |
坚固性系数 | 3.47 | 3.6 | 5.03 | 2.9 | 1.61 |
分类级别 | Ⅰ | Ⅱ | Ⅱ | Ⅱ | Ⅰ |
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